[1] Kyushu Natl Canc Ctr, Dept Thorac Oncol, Minami Ku, Fukuoka 8111395, Japan
[2] Kumamoto Reg Med Ctr, Div Resp Dis, Kumamoto, Japan
[3] Shin Beppu Hosp, Dept Resp Med, Oita, Japan
[4] Isahaya Insurance Gen Hosp, Dept Resp Med, Nagasaki, Japan
[5] Kumamoto City Hosp, Dept Resp Med, Kumamoto, Japan
[6] Yamaguchi Cent Hosp, Dept Resp Med, Yamaguchi, Japan
[7] Minamata Gen Med Ctr, Dept Resp Med, Kumamoto, Japan
[8] Asou Iizuka Hosp, Dept Resp Med, Fukuoka, Japan
[9] Saiseikai Kumamoto Hosp, Resp Organ & Diabet Ctr, Kumamoto, Japan